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Analog Devices Inc./Maxim Integrated DS8113-RNG+
- Part No.:
- DS8113-RNG+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
DS8113-RNG+.pdf
- Description:
- IC INTERFACE SMART CARD 28-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,804
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Product details
Overview
The DS8113-RNG+ from Maxim Integrated is a smart card analog front-end IC designed to interface microcontrollers with ISO 7816/EMV/GSM11-11-compliant smart cards. It delivers programmable 1.8V/3V/5V card supply generation (up to 80mA at 5V), integrated ESD protection (8kV IEC), and ultra-low stop-mode current (<10nA), enabling use in battery-powered POS terminals, PIN pads, and ATMs.
For engineers reviewing the DS8113-RNG+ datasheet, DS8113-RNG+ pinout, DS8113-RNG+ application, or DS8113-RNG+ equivalent, key selection considerations include its triple-voltage card power generation, automatic activation/deactivation sequencer, dual-presence detection (PRES/PRES), and ISO 7816-compliant timing control for RST/CLK/I/O lines.
Technical Context
The DS8113-RNG+ implements a dedicated internal sequencer that autonomously manages smart card activation (tACT = 50–220μs) and deactivation (tDEACT = 50–100μs), including controlled VCC ramp-up/down, CLK enablement, and RST assertion timing per ISO 7816-3. Its clock circuit supports external crystal (up to 20MHz) or clock input with selectable division (×1/2/4/8) via CLKDIV1/CLKDIV2 pins.
It features dual-supply operation: VDD (2.7–6.0V) powers digital logic and host interfaces, while VDDA (≥5.0V) feeds the card voltage generator. Level-shifting transceivers on I/O, AUX1, AUX2, I/OIN, AUX1IN, AUX2IN ensure bidirectional signal compatibility between host and card, with 11kΩ internal pullups and ±15mA current limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Digital Supply Voltage (VDD) | 2.7V to 6.0V - Matches host MCU rail; enables direct interfacing without level translators. |
| Card Supply Outputs | 5.0V ±5% / 80mA max, 3.0V ±8% / 65mA max, 1.8V ±10% / 30mA max - Fully integrated, sequenced power for all ISO 7816 card classes. |
| Stop-Mode Current | <10nA typical - Achieved by forcing CMDVCC, 5V/3V, and 1_8V high; enables multi-year battery life in portable readers. |
| ESD Protection | 8kV min (IEC 61000-4-2) on card interface pins - Protects against user-handling surges without external TVS diodes. |
| Crystal Frequency Support | Up to 20MHz - Enables precise CLK generation for EMV L1 transactions requiring strict timing compliance. |
| RST/CLK Timing Accuracy | tR_RST/tF_RST ≤ 0.1μs, tR_CLK/tF_CLK ≤ 8ns - Meets ISO 7816-3 rise/fall time requirements for reliable ATR exchange. |
| Card Presence Detection | Dual active-high/active-low PRES inputs with 8ms typ debounce - Supports mechanical switch variants and eliminates false triggers during insertion/removal. |
Pinout & Package
DS8113-RNG+ is housed in a 28-pin SO (Small Outline) package, RoHS-compliant and lead-free. Pin functions are validated per Maxim's official DS8113 datasheet Rev 3 (April 2010).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | CLKDIV1, CLKDIV2 | Binary-selectable clock divider inputs - configure CLK output as fXTAL/1, /2, /4, or /8 per Table 1. |
| 3 | 5V/3V | Voltage selection override - logic-high enables 5V card mode; overridden by 1_8V when asserted. |
| 4 | PGND | Analog ground reference - separate from digital GND (pin 22) to minimize noise coupling into card power paths. |
| 9, 10 | PRES, PRES | Dual card presence inputs - support both normally-open and normally-closed mechanical switches with internal 8ms debounce. |
| 11 | I/O | Smart card data line (contact C7) - bidirectional, level-shifted, with 11kΩ pullup to VCC and ±15mA short-circuit protection. |
| 15 | CLK | Card clock output (contact C3) - ISO 7816-compliant rise/fall time (≤8ns) and 45–55% duty cycle guarantee. |
| 16 | RST | Card reset output (contact C2) - precisely timed assertion after VCC stabilization; supports EMV cold/warm reset sequences. |
| 17 | VCC | Programmable card supply output - delivers regulated 1.8V/3V/5V up to 80mA; requires local 100nF + 220nF decoupling to CGND. |
| 19 | CMDVCC | Activation sequence trigger - active-low initiates full hardware-controlled power-up and interface enable sequence. |
| 23 | OFF | Status interrupt output - active-low indicates card presence (CMDVCC high) or fault condition (CMDVCC low) such as short-circuit or overheating. |
| 24, 25 | XTAL1, XTAL2 | Clock source interface - accepts 20MHz crystal or external clock; XTAL1-only drive enables low-idle-current operation. |
| 26–28 | I/OIN, AUX1IN, AUX2IN | Host-side data inputs - level-shifted to card voltage domain; pulled up to VDD (11kΩ) in inactive state. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-voltage card supply generation | Hardware-sequenced 1.8V/3V/5V outputs eliminate need for external regulators and reduce BOM count in multi-standard readers. |
| Automatic activation/deactivation sequencer | Fully autonomous timing engine handles VCC ramp, CLK enable, RST assertion, and contact release per ISO 7816-3-no firmware overhead required. |
| Dual-presence detection with hardware debounce | Independent PRES/PRES inputs plus 8ms typ internal timer prevent false card-insertion signals from mechanical switch bounce. |
| Integrated 8kV IEC ESD protection | On-chip clamping on all card-facing pins removes requirement for external ESD diodes, simplifying layout and reducing cost. |
| Ultra-low-power stop mode | <10nA quiescent current achieved via three-pin enable (CMDVCC/5V/3V/1_8V high), enabling decade-scale battery operation in portable devices. |
Applications
| POS Terminal Smart Card Interface | ATM Card Reader Subsystem |
|---|---|
Use Scenario: Secure debit/credit transaction processing in retail point-of-sale terminals requiring EMV Level 1 certification. IC Role / Device Role / Timing Role: Analog front-end managing power delivery, clock/data timing, reset sequencing, and ESD protection for ISO 7816 contact interface. Use Value: Enables single-chip compliance with EMV 2000 timing constraints (e.g., RST/CLK setup/hold, ATR response window) without MCU intervention. |
Use Scenario: High-reliability card reading in automated teller machines operating 24/7 under temperature extremes (-40°C to +85°C). IC Role / Device Role / Timing Role: Fault-tolerant smart card interface providing overcurrent, overtemperature, and card-removal detection with automatic emergency deactivation. Use Value: Prevents transaction corruption during card withdrawal via hardware-triggered deactivation sequence (tDEACT ≤ 100μs) and OFF pin fault signaling. |
| PIN Pad Security Module | Set-Top Box Conditional Access |
Use Scenario: Tamper-resistant PIN entry device used in banking kiosks and merchant terminals with strict power budget limits. IC Role / Device Role / Timing Role: Low-power smart card controller delivering <10nA stop-mode current and fast wake-up (<220μs) for rapid transaction initiation. Use Value: Extends battery life beyond 5 years in sealed, maintenance-free PIN pads while maintaining EMV-compliant activation latency. |
Use Scenario: Subscriber identification module (SIM) interface in pay-TV set-top boxes supporting conditional access via 1.8V/3V smart cards. IC Role / Device Role / Timing Role: Voltage-flexible card interface enabling seamless transition between legacy 3V and modern 1.8V CA cards using 1_8V priority control. Use Value: Eliminates need for dual-voltage board designs; single DS8113-RNG+ supports backward-compatible field upgrades of CA modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart card interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3232ESE+ | RS-232 transceiver only; no card power generation, no sequencer, no ESD rating >4kV | Limited to UART-level signal translation; cannot replace DS8113-RNG+ in full smart card reader designs | Select only for isolated serial bridge functions-not as a DS8113-RNG+ substitute. |
| ST8024B | Single-supply (3.3V) design; supports only 3V/5V cards (no 1.8V); no integrated stop mode <100nA | Suitable for cost-sensitive 3V/5V-only readers but lacks EMV-ready 1.8V support and ultra-low-power capability | Consider for legacy 3V/5V systems where 1.8V migration and battery life are not required. |
Compared with MAX3232ESE+ and ST8024B, the DS8113-RNG+ uniquely integrates triple-voltage regulation, hardware sequencer, 8kV ESD, and sub-10nA stop mode-making it the only single-chip solution qualified for EMV L1-certified, battery-operated, multi-standard smart card readers.
Availability
DS8113-RNG+ is available at Aetrix Electronics and suitable for POS terminals, ATM card readers, PIN pads, and pay-TV conditional access modules requiring stable component supply across industrial temperature ranges (-40°C to +85°C).
Supply support for DS8113-RNG+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The DS8113-RNG+ belongs to Maxim's secure transaction interface product line, engineered specifically to simplify EMV-compliant smart card reader design by integrating power, timing, protection, and sequencing functions into one IC.
FAQ
What is the primary function of the DS8113-RNG+ in a smart card system?
The DS8113-RNG+ serves as a complete analog front-end for ISO 7816-compliant smart cards, handling voltage generation (1.8V/3V/5V), level shifting, ESD protection, clock generation, and hardware-sequenced activation/deactivation. It replaces discrete power, timing, and interface components, enabling compact, certified reader designs without MCU firmware overhead for basic card control.
How does the DS8113-RNG+ achieve ultra-low stop-mode current?
The DS8113-RNG+ enters stop mode only when CMDVCC, 5V/3V, and 1_8V pins are all driven high simultaneously-disabling all internal analog circuits including the voltage generator, oscillator, and transceivers. This configuration yields <10nA typical current draw, verified in the datasheet's "Stop-Mode Current" specification (IDD_STOP) under Note 3.
Can the DS8113-RNG+ support both 1.8V and 5V smart cards on the same PCB?
Yes-the DS8113-RNG+ supports dynamic voltage selection via dedicated 1_8V (priority) and 5V/3V control pins. When 1_8V is high, VCC outputs 1.8V regardless of 5V/3V state; when 1_8V is low, 5V/3V selects between 5V (high) and 3V (low). This allows one hardware design to serve multiple card standards without manual configuration.
What fault conditions trigger the OFF pin assertion during active card operation?
During active operation (CMDVCC low), the OFF pin goes low to signal faults including VCC short-circuit or overload (>120mA), card removal mid-transaction, VDD dropout, VDDA undervoltage, or junction temperature exceeding +150°C. This initiates automatic emergency deactivation per Figure 7, ensuring safe card disconnection without MCU involvement.
Is an external crystal required for DS8113-RNG+ operation, or can it accept a clock signal?
The DS8113-RNG+ accepts either a 20MHz crystal across XTAL1/XTAL2 or a single-ended clock signal applied to XTAL1. The datasheet explicitly states "an external clock must be driven on XTAL1" for the low idle-mode current variant, confirming clock-input operation is fully supported and electrically characterized.
DS8113-RNG+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Applications:
- Smart Card
- Interface:
- Analog
- Voltage - Supply:
- 2.7V ~ 6V
- Supplier Device Package:
- 28-SOIC
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
DS8113-RNG+ FAQ
1.How can I place an order for DS8113-RNG+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS8113-RNG+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS8113-RNG+ reliable?
The price and inventory of DS8113-RNG+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS8113-RNG+ is usually 5 days.
3.What payment methods are accepted for DS8113-RNG+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS8113-RNG+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS8113-RNG+?
DS8113-RNG+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS8113-RNG+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS8113-RNG+?
For technical support, including DS8113-RNG+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS8113-RNG+ requirements.
6.How does Aetrix verify that DS8113-RNG+ is sourced from the original manufacturer or authorized distributors?
All DS8113-RNG+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS8113-RNG+ meets industry standards.
7.What is the process for return or replacement of DS8113-RNG+?
All DS8113-RNG+ units undergo pre-shipment inspection (PSI). If there is an issue with DS8113-RNG+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS8113-RNG+ part is unused and in its original packaging.
Return procedure for DS8113-RNG+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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